THz Isomer Security Element for Anti-Counterfeiting

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Solution Overview

Problem

Existing security measures for protecting objects from counterfeiting, such as banknotes and documents, are continually being circumvented by counterfeiters, necessitating the development of more advanced and difficult-to-imitate security features.

Innovation Solution

A security element utilizing at least two isomers of a substance with distinct spectral properties in the THz frequency range, which are undetectable under UV, visible, or near-infrared illumination, arranged in a structured pattern on a carrier, requiring specialized technology to identify and replicate.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional security measures (watermarks, holograms, UV structures) are used, then security protection is provided, but counterfeiters can eventually circumvent these measures

Engineering Contradiction:
Improvesecurity protectionVSAvoidresistance to counterfeiting
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent changes the detection parameter from visible/UV ranges to terahertz frequency range. The security element uses isomers that are indistinguishable under conventional illumination but exhibit different spectral properties in the terahertz range, fundamentally changing the detection domain to prevent counterfeiting

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent extracts the security feature detection to a specific frequency range (terahertz) that is inaccessible to counterfeiters. By isolating the security verification to this specialized frequency band, the patent creates a security layer that cannot be replicated with conventional materials or methods

Inventive Principle:
Principle #2Taking out (Extraction)

2Adaptability or versatility

If isomers with different spectral properties in THz range are used, then counterfeiting resistance increases, but detection technology becomes more specialized and less accessible

Engineering Contradiction:
Improvecounterfeiting resistanceVSAvoiddetection accessibility
Core Design Contradiction:
Adaptability or versatilityVSDifficulty of detecting and measuring

Solution Approach 1:

The patent segments the electromagnetic spectrum into conventional range (for general use) and terahertz range (for security verification). This segmentation allows the security element to remain invisible under conventional illumination while providing verification capabilities in the specialized terahertz domain

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces terahertz radiation as an intermediary for security verification. The isomers act as intermediaries that store security information in their molecular structure, which can only be accessed through terahertz radiation, creating a secure communication channel between the security element and verifier

Inventive Principle:
Principle #24Intermediary (Mediator)

3Loss of information

If multiple isomers are arranged in structured patterns, then information capacity increases, but manufacturing precision requirements increase

Engineering Contradiction:
Improveinformation capacityVSAvoidisomer arrangement precision
Core Design Contradiction:
Loss of informationVSManufacturing precision

Solution Approach 1:

The patent uses two-dimensional spatial arrangement of isomers on the carrier to encode information. By positioning different isomers at specific locations and orientations, the patent creates a security pattern that can be verified through terahertz spectroscopy, increasing information capacity without requiring complex three-dimensional structures

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The security element is highly resistant to counterfeiting, as it is difficult for unauthorized individuals to produce or imitate, with the transition between isomers creating a high technical hurdle, providing a persistent advantage over counterfeiters.

Implementation Method 1

at least two isomers of a substance whose spectral properties differ in the THz frequency range and are detectable

Methodology Applied
Scientific EffectTHz spectral properties: Absorption Spectroscopy

Data Source

PatentEP2398653B1Security element for marking and/or identifying objects
Publication Date: 2016.11.09 FRAUNHOFER GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG EV
  • EP2398653B1 patent drawing

AI summary

The invention relates to a security element for marking and/or identifying objects that can be read or recognized under the use of radiation of specified wavelengths. The security element according to the invention has at least two isomers of a substance that is designed as a structure, wherein the spectral properties of the at least isomers differ in the THz frequency range and can be detected.